I never considered Dr Pepper as a person because they made a big deal about how it doesn’t have a period in the name, like an actual doctor title would. So it’s always just been a brand name to me.
But I’m a bit neurotic about nitpicky details like that.
I personally see “bloodline” as a specific, direct line of descendants through a certain genetic-based family, title, position, etc. Whereas a family tree is literally everybody you’re related to, directly or not.
EDIT: As an example, I have an uncle on my mom’s side of the family. He’s not genetically related to me; he married into our family. He also brought a daughter from a previous marriage, so she’s legally my cousin, but we’re not genetically related at all. They married into my bloodline, but they aren’tof my bloodline, if that makes sense. They’re part of my family tree.